Improved sash-holder



sind @Wine BENNETT KINDBLADE,

OF GENEVA, ILLINOIS.

Letters Patent No. 89,f532, dated May 4, 1869.

knvxrnormn Sasser-HOLDER.l

The Schedule referred to in these Letters Patent and making part ol thename.

To all whom it may concern Be it known that I, BENNETT KINDBLADE, ofGeneva, in the county of Kane, and State of Illinois, ,have invented anew and improved \Vindow-Sash Lock; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, making part of this specication,in which- Figure l is a view of a portion of' a window-sash, having myimproved lock applied to the sash.

Figure 2 is a sectional view through the sash-lock, applied to a portionof a sash-frame.

Figure 3 is au exterior view of the lock, indicating it in twopositions.

Figure 4 is a view of' the interior of the outer case, showing itsspurred ecceatrie.

Figures 5, 6, and 7, ow separately the three parts constituting thelock.

Similar lettens of reference indicate corresponding parts in the severalfigures.

This invention relates to an improvement on window-sash. locks, of thatclass which hold the sashes by the action of cam or eccentric surfaces,acting directly upon the beading or window-frames.

The nature of my invention consists- First, in constructing anoscillatin g hollow cam, with an interior hub or collar surrounding itspintle or axis, and in combining tnerewith a metallic circular hearing,which is received '-.vithiu acircular recess formed in said (am, andwhich has a tubular stem formed ceutrally upon it, that enters the'hnhor collar on the cam, anni affords a rearing and support therefor whenapplied 'to a window-sash, as will be hereinafter ex plained.

Second, in combining, with said oscillating cam and hearing, a slidingspurred yoke, which is adapted for penetrating the frame or bead of awindow, when the cam is adju sted to hold the same, and affording arigid bite to prevent liability of' slipping, and which will retract orbe drawn within the cam in the act of relieving the sash, as will behereinafter explained.

To enable others skilled in the art to understand my invention, I willdescribe its construction and operation.

A represents a window-sash;

B, the frame of the window; and

b, a bead or window-strip, on one side ofthe sash.

These parts may be constructed in the usual wellknown manner for housescr railroad-cars.

G a circular plate, which has a hole made centrall v through it,surrounded by a short tube or cylindrical bearing, g, as shown in figs.2 and 7.

This plate is secured 'to the face of one of the npright rails of a sashby screws or nails, the heads, i, of which are conntersunk into theplate, flush with its exterior surface.

B represents a hollow cam, having a handle or level', d, a collar, g',and a lib, f', formed on it.

The handle d extends from the flattened edge of the cam. The collar g isformed upon the inner surface thereof', around the holo for pintle-screwc, and the straight ril: or tooth f is formed upon the inner surface ofthe cam, in line with handle d, as clearly shown in figs. 2, 4, and 5. l

Notches ef c' are made through the edges of the flanges of the cam B, onopposite sides of its echar g', for the purpose of allowing teeth orspurs c e to protrude from the biting-surfaces or greatest radii of thecam, as shown in figs. 1 and 3.

The flange of cam B is adapted for receiving within it the plate G, andthe collar g' of this cam is adapted for receiving and forming a bearingfor the cam, about which it will oscillate freely.

The collar g is of such lengt-h that when the screwpintle is in place,the edge of this collar will, by abutting against the plate G, preventthe edge of the ange of the cam from irnpinging upon the sash A,conseqnently this cam will not be caused to work hard, or bind from anycause, and the device remain in good working order for au indefiniteperiod of time.

The teeth or spurs e e are formed on the outer extremities of a yoke, G,having a circular opening through it, which receives the collar y, and aboss, h, within it, as indicated in dotted lines, lig. 3.

The studs f f, on the surface of' the yoke, receive the rib f on theinner surface of the cam B.

The boss h is formed on the outer face of the plate G, and as the cam Bis turned about its axis of motion, this boss will canse the spurredyoke to slide and expose or retract its spuis e. v

When the severa-l parts of the device are adjusted in their properplaces, and secured to a sash, the latter may be secured fast :it anydesired point by turning the cam, so that its flanged edge will bearagainst the window-strip.

In the act of adjusting the cam to hold a slash up or down, one or theother of the spurs c will protrude beyond the biting-surfzwe of thecani, and, by entering the strip b, will lock the sash securely in thedesired position, and prevent liability of slipping.

I am aware that cum-locks for windowsashes have been known and used longprior to my invention; but I am not :avare that a locking-device,constructed as I'have above described, has ever been known or used priorto my invention. v

Having described my invention, What I claim as new, and desire to secureby Letters Patent, is-

The spurred yoke C, applied within a hollow cam, B, constructed andoperating substantially' as described.

BENNETT KINDBLADE.

Witnesses:

O. D. E. SMITH, Guo. W. Wyrsox.

